Is the ratio of observed X-ray luminosity to bolometric luminosity in early-type stars really a constant?

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Early Stars, Heao 2, Luminosity, Stellar Atmospheres, Stellar Winds, X Rays, Absorption Spectra, Bolometers, Mathematical Models, Predictions, Scaling Laws

Scientific paper

The observed X-ray emission from early-type stars can be explained by the recombination stellar wind model (or base coronal model). The model predicts that the true X-ray luminosity from the base coronal zone can be 10 to 1000 times greater than the observed X-ray luminosity. From the models, scaling laws were found for the true and observed X-ray luminosities. These scaling laws predict that the ratio of the observed X-ray luminosity to the bolometric luminosity is functionally dependent on several stellar parameters. When applied to several other O and B stars, it is found that the values of the predicted ratio agree very well with the observed values.

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